Wave Control Pro v2.20 (Android)

Control Your Phone With a Wave of Your Hand!
Uses the proximity sensor on your phone to allow control of your music and video playback and calls by waving your hand over your phone. Requirements: Android 2.2 and up

This Pro version gives all current and future features at no additional cost. Free version has purchasable upgrades to pick and choose features as they become available. Pro version's price periodically increases as features are added.

Known Issues:
Galaxy Ace, Y, and Fit: Try a different music app for the list further down.
Screen Off not working on One X, Galaxy S Captivate

Better than lockscreen controls since there's no need to turn on your screen or even touch your phone at all!
-Want the next song? Just wave!
-Need to silence your ringer quickly? Just wave!

Easy to use, just wave your hand over the sensor (usually located just next to the earpiece on your phone).
Holding it there (hover) - Pause/Resume
One wave across - Next Song
Two waves across - Previous Song
Three times - Enable/Disable the controls

*Be sure to enable Headset Button Control in your player of choice

Some Notes:
Tip for the hover gesture: if you move your hand away too quickly it'll register a wave
After an action, there is a 1 second delay before another gesture will be registered
Will work with any player that accepts headset (media button) controls
If the screen is off or another app is in focus, phone vibrates once on pause control and twice on resume controls
Practice your wave techniques by checking the "Last Action"
If you're getting another player responding to the commands, check if that app has the option to disable headset button controls